August 2018 1 20 Report
Wyznacz niewiadomy wyraz proporcji.
Wyznacz niewiadomy wyraz proporcji.
a) 5½ : a = 2¾ : 3
b) 16 : 3 3/5 = a : 1,2
c) a : 0,3 = 3,6 : 2⅖
d) 5 : a = 4⅔ : 1⅙

daje naj. ;))
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